A Measurement Method of the AC Loss in HTS Tape using Electric and Calorimetric Methods

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  • OGAWA Jun
    Graduate School of Science and Technology, Niigata University
  • TSUKAMOTO Osami
    Graduate School of Science and Technology, Yokohama National University

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Other Title
  • 高温超伝導線材の電気的・熱的測定法による交流損失測定法
  • 高温超伝導線材の電気的・熱的測定法による交流損失測定法--YBCO薄膜導体の交流外部磁界印加角度による全損失特性
  • コウオン チョウデンドウ センザイ ノ デンキテキ ネツテキ ソクテイホウ ニ ヨル コウリュウ ソンシツ ソクテイホウ YBCO ハクマク ドウタイ ノ コウリュウ ガイブ ジカイ インカ カクド ニ ヨル ゼン ソンシツ トクセイ
  • —YBCO薄膜導体の交流外部磁界印加角度による全損失特性—
  • —Dependence of the total AC loss in a YBCO tape conductor on the direction of the external magnetic field—

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Abstract

We measured total AC losses in a YBCO tape conductor using a calorimetric method for which the validity was proven by simultaneous electric and calorimetric measurements of the losses in the same part of the conductor. Our data is accurate to 5x10-5∼5x10-2 J/m/cycle at 64.1 Hz. The data can be reduced to one curve plotted against a corrected abscissa of the external magnetic field plus the internal magnetic field. The AC loss in different phases of transport current and external magnetic field varies with the phase. Our finding demonstrates the possibility of reducing loss in the case of tri-axial superconducting cables.

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